1.

In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable

A. CaSO₄ .1/2H₂O and CaSO₄ crystals
B. pyrophosphoric acid
C. metaphosphoric acid
D. all (a), (b) and (c).
Answer» B. pyrophosphoric acid


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